Pneumatic fastener driving apparatus with piston holding detent

Details Pneumatic fastener driving apparatus with piston holding detent Pneumatic fastener driving apparatus with piston holding detent

1991-05-16

1993-01-26

Look, Edward K.

Motors: expansible chamber type

With correlated control of motive fluid and locking means

91417A, 91461, 173127, 227130, F15B 1526, B25C 100

Patent

active

051814501

ABSTRACT:
A pneumatic operated fastener driving device having an improved piston, which together with the cylinder form an elastic interference fit connection so that the piston is held from movement until a sufficient air pressure is applied to the piston. The piston has little or no frictional resistance with the inner surface of the cylinder during the driving or return stroke.

REFERENCES:
patent: 2899935 (1959-08-01), Dalton
patent: 2959155 (1960-11-01), Powers
patent: 2983922 (1961-05-01), Juilfs
patent: 3397617 (1968-08-01), Cast et al.
patent: 3638534 (1972-02-01), Ramspeck
patent: 3969988 (1976-07-01), Mauer
patent: 4173171 (1979-11-01), Lange
patent: 4747338 (1988-05-01), Crutcher

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